https://github.com/jashkenas/backbone
Tip revision: 4c98b02b40fc62b42c363bdd5c66d3133a5dfbf2 authored by Justin Ridgewell on 07 December 2015, 16:25:07 UTC
Give a nested route example
Give a nested route example
Tip revision: 4c98b02
collection.js
(function() {
var a, b, c, d, e, col, otherCol;
QUnit.module("Backbone.Collection", {
beforeEach: function(assert) {
a = new Backbone.Model({id: 3, label: 'a'});
b = new Backbone.Model({id: 2, label: 'b'});
c = new Backbone.Model({id: 1, label: 'c'});
d = new Backbone.Model({id: 0, label: 'd'});
e = null;
col = new Backbone.Collection([a,b,c,d]);
otherCol = new Backbone.Collection();
}
});
QUnit.test("new and sort", function(assert) {
assert.expect(6);
var counter = 0;
col.on('sort', function(){ counter++; });
assert.deepEqual(col.pluck('label'), ['a', 'b', 'c', 'd']);
col.comparator = function(a, b) {
return a.id > b.id ? -1 : 1;
};
col.sort();
assert.equal(counter, 1);
assert.deepEqual(col.pluck('label'), ['a', 'b', 'c', 'd']);
col.comparator = function(model) { return model.id; };
col.sort();
assert.equal(counter, 2);
assert.deepEqual(col.pluck('label'), ['d', 'c', 'b', 'a']);
assert.equal(col.length, 4);
});
QUnit.test("String comparator.", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([
{id: 3},
{id: 1},
{id: 2}
], {comparator: 'id'});
assert.deepEqual(collection.pluck('id'), [1, 2, 3]);
});
QUnit.test("new and parse", function(assert) {
assert.expect(3);
var Collection = Backbone.Collection.extend({
parse : function(data) {
return _.filter(data, function(datum) {
return datum.a % 2 === 0;
});
}
});
var models = [{a: 1}, {a: 2}, {a: 3}, {a: 4}];
var collection = new Collection(models, {parse: true});
assert.strictEqual(collection.length, 2);
assert.strictEqual(collection.first().get('a'), 2);
assert.strictEqual(collection.last().get('a'), 4);
});
QUnit.test("clone preserves model and comparator", function(assert) {
assert.expect(3);
var Model = Backbone.Model.extend();
var comparator = function(model){ return model.id; };
var collection = new Backbone.Collection([{id: 1}], {
model: Model,
comparator: comparator
}).clone();
collection.add({id: 2});
assert.ok(collection.at(0) instanceof Model);
assert.ok(collection.at(1) instanceof Model);
assert.strictEqual(collection.comparator, comparator);
});
QUnit.test("get", function(assert) {
assert.expect(6);
assert.equal(col.get(0), d);
assert.equal(col.get(d.clone()), d);
assert.equal(col.get(2), b);
assert.equal(col.get({id: 1}), c);
assert.equal(col.get(c.clone()), c);
assert.equal(col.get(col.first().cid), col.first());
});
QUnit.test("get with non-default ids", function(assert) {
assert.expect(5);
var MongoModel = Backbone.Model.extend({idAttribute: '_id'});
var model = new MongoModel({_id: 100});
var col = new Backbone.Collection([model], {model: MongoModel});
assert.equal(col.get(100), model);
assert.equal(col.get(model.cid), model);
assert.equal(col.get(model), model);
assert.equal(col.get(101), void 0);
var col2 = new Backbone.Collection();
col2.model = MongoModel;
col2.add(model.attributes);
assert.equal(col2.get(model.clone()), col2.first());
});
QUnit.test('get with "undefined" id', function(assert) {
var collection = new Backbone.Collection([{id: 1}, {id: 'undefined'}]);
assert.equal(collection.get(1).id, 1);
});
QUnit.test("update index when id changes", function(assert) {
assert.expect(4);
var col = new Backbone.Collection();
col.add([
{id : 0, name : 'one'},
{id : 1, name : 'two'}
]);
var one = col.get(0);
assert.equal(one.get('name'), 'one');
col.on('change:name', function (model) { assert.ok(this.get(model)); });
one.set({name: 'dalmatians', id : 101});
assert.equal(col.get(0), null);
assert.equal(col.get(101).get('name'), 'dalmatians');
});
QUnit.test("at", function(assert) {
assert.expect(2);
assert.equal(col.at(2), c);
assert.equal(col.at(-2), c);
});
QUnit.test("pluck", function(assert) {
assert.expect(1);
assert.equal(col.pluck('label').join(' '), 'a b c d');
});
QUnit.test("add", function(assert) {
assert.expect(14);
var added, opts, secondAdded;
added = opts = secondAdded = null;
e = new Backbone.Model({id: 10, label : 'e'});
otherCol.add(e);
otherCol.on('add', function() {
secondAdded = true;
});
col.on('add', function(model, collection, options){
added = model.get('label');
opts = options;
});
col.add(e, {amazing: true});
assert.equal(added, 'e');
assert.equal(col.length, 5);
assert.equal(col.last(), e);
assert.equal(otherCol.length, 1);
assert.equal(secondAdded, null);
assert.ok(opts.amazing);
var f = new Backbone.Model({id: 20, label : 'f'});
var g = new Backbone.Model({id: 21, label : 'g'});
var h = new Backbone.Model({id: 22, label : 'h'});
var atCol = new Backbone.Collection([f, g, h]);
assert.equal(atCol.length, 3);
atCol.add(e, {at: 1});
assert.equal(atCol.length, 4);
assert.equal(atCol.at(1), e);
assert.equal(atCol.last(), h);
var coll = new Backbone.Collection(new Array(2));
var addCount = 0;
coll.on('add', function(){
addCount += 1;
});
coll.add([undefined, f, g]);
assert.equal(coll.length, 5);
assert.equal(addCount, 3);
coll.add(new Array(4));
assert.equal(coll.length, 9);
assert.equal(addCount, 7);
});
QUnit.test("add multiple models", function(assert) {
assert.expect(6);
var col = new Backbone.Collection([{at: 0}, {at: 1}, {at: 9}]);
col.add([{at: 2}, {at: 3}, {at: 4}, {at: 5}, {at: 6}, {at: 7}, {at: 8}], {at: 2});
for (var i = 0; i <= 5; i++) {
assert.equal(col.at(i).get('at'), i);
}
});
QUnit.test("add; at should have preference over comparator", function(assert) {
assert.expect(1);
var Col = Backbone.Collection.extend({
comparator: function(a,b) {
return a.id > b.id ? -1 : 1;
}
});
var col = new Col([{id: 2}, {id: 3}]);
col.add(new Backbone.Model({id: 1}), {at: 1});
assert.equal(col.pluck('id').join(' '), '3 1 2');
});
QUnit.test("add; at should add to the end if the index is out of bounds", function(assert) {
assert.expect(1);
var col = new Backbone.Collection([{id: 2}, {id: 3}]);
col.add(new Backbone.Model({id: 1}), {at: 5});
assert.equal(col.pluck('id').join(' '), '2 3 1');
});
QUnit.test("can't add model to collection twice", function(assert) {
var col = new Backbone.Collection([{id: 1}, {id: 2}, {id: 1}, {id: 2}, {id: 3}]);
assert.equal(col.pluck('id').join(' '), '1 2 3');
});
QUnit.test("can't add different model with same id to collection twice", function(assert) {
assert.expect(1);
var col = new Backbone.Collection;
col.unshift({id: 101});
col.add({id: 101});
assert.equal(col.length, 1);
});
QUnit.test("merge in duplicate models with {merge: true}", function(assert) {
assert.expect(3);
var col = new Backbone.Collection;
col.add([{id: 1, name: 'Moe'}, {id: 2, name: 'Curly'}, {id: 3, name: 'Larry'}]);
col.add({id: 1, name: 'Moses'});
assert.equal(col.first().get('name'), 'Moe');
col.add({id: 1, name: 'Moses'}, {merge: true});
assert.equal(col.first().get('name'), 'Moses');
col.add({id: 1, name: 'Tim'}, {merge: true, silent: true});
assert.equal(col.first().get('name'), 'Tim');
});
QUnit.test("add model to multiple collections", function(assert) {
assert.expect(10);
var counter = 0;
var e = new Backbone.Model({id: 10, label : 'e'});
e.on('add', function(model, collection) {
counter++;
assert.equal(e, model);
if (counter > 1) {
assert.equal(collection, colF);
} else {
assert.equal(collection, colE);
}
});
var colE = new Backbone.Collection([]);
colE.on('add', function(model, collection) {
assert.equal(e, model);
assert.equal(colE, collection);
});
var colF = new Backbone.Collection([]);
colF.on('add', function(model, collection) {
assert.equal(e, model);
assert.equal(colF, collection);
});
colE.add(e);
assert.equal(e.collection, colE);
colF.add(e);
assert.equal(e.collection, colE);
});
QUnit.test("add model with parse", function(assert) {
assert.expect(1);
var Model = Backbone.Model.extend({
parse: function(obj) {
obj.value += 1;
return obj;
}
});
var Col = Backbone.Collection.extend({model: Model});
var col = new Col;
col.add({value: 1}, {parse: true});
assert.equal(col.at(0).get('value'), 2);
});
QUnit.test("add with parse and merge", function(assert) {
var collection = new Backbone.Collection();
collection.parse = function(attrs) {
return _.map(attrs, function(model) {
if (model.model) return model.model;
return model;
});
};
collection.add({id: 1});
collection.add({model: {id: 1, name: 'Alf'}}, {parse: true, merge: true});
assert.equal(collection.first().get('name'), 'Alf');
});
QUnit.test("add model to collection with sort()-style comparator", function(assert) {
assert.expect(3);
var col = new Backbone.Collection;
col.comparator = function(a, b) {
return a.get('name') < b.get('name') ? -1 : 1;
};
var tom = new Backbone.Model({name: 'Tom'});
var rob = new Backbone.Model({name: 'Rob'});
var tim = new Backbone.Model({name: 'Tim'});
col.add(tom);
col.add(rob);
col.add(tim);
assert.equal(col.indexOf(rob), 0);
assert.equal(col.indexOf(tim), 1);
assert.equal(col.indexOf(tom), 2);
});
QUnit.test("comparator that depends on `this`", function(assert) {
assert.expect(2);
var col = new Backbone.Collection;
col.negative = function(num) {
return -num;
};
col.comparator = function(a) {
return this.negative(a.id);
};
col.add([{id: 1}, {id: 2}, {id: 3}]);
assert.deepEqual(col.pluck('id'), [3, 2, 1]);
col.comparator = function(a, b) {
return this.negative(b.id) - this.negative(a.id);
};
col.sort();
assert.deepEqual(col.pluck('id'), [1, 2, 3]);
});
QUnit.test("remove", function(assert) {
assert.expect(12);
var removed = null;
var result = null;
col.on('remove', function(model, col, options) {
removed = model.get('label');
assert.equal(options.index, 3);
assert.equal(col.get(model), undefined, '#3693: model cannot be fetched from collection');
});
result = col.remove(d);
assert.equal(removed, 'd');
assert.strictEqual(result, d);
//if we try to remove d again, it's not going to actually get removed
result = col.remove(d);
assert.strictEqual(result, undefined);
assert.equal(col.length, 3);
assert.equal(col.first(), a);
col.off();
result = col.remove([c, d]);
assert.equal(result.length, 1, 'only returns removed models');
assert.equal(result[0], c, 'only returns removed models');
result = col.remove([c, b]);
assert.equal(result.length, 1, 'only returns removed models');
assert.equal(result[0], b, 'only returns removed models');
result = col.remove([]);
assert.deepEqual(result, [], 'returns empty array when nothing removed');
});
QUnit.test("add and remove return values", function(assert) {
assert.expect(13);
var Even = Backbone.Model.extend({
validate: function(attrs) {
if (attrs.id % 2 !== 0) return "odd";
}
});
var col = new Backbone.Collection;
col.model = Even;
var list = col.add([{id: 2}, {id: 4}], {validate: true});
assert.equal(list.length, 2);
assert.ok(list[0] instanceof Backbone.Model);
assert.equal(list[1], col.last());
assert.equal(list[1].get('id'), 4);
list = col.add([{id: 3}, {id: 6}], {validate: true});
assert.equal(col.length, 3);
assert.equal(list[0], false);
assert.equal(list[1].get('id'), 6);
var result = col.add({id: 6});
assert.equal(result.cid, list[1].cid);
result = col.remove({id: 6});
assert.equal(col.length, 2);
assert.equal(result.id, 6);
list = col.remove([{id: 2}, {id: 8}]);
assert.equal(col.length, 1);
assert.equal(list[0].get('id'), 2);
assert.equal(list[1], null);
});
QUnit.test("shift and pop", function(assert) {
assert.expect(2);
var col = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
assert.equal(col.shift().get('a'), 'a');
assert.equal(col.pop().get('c'), 'c');
});
QUnit.test("slice", function(assert) {
assert.expect(2);
var col = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
var array = col.slice(1, 3);
assert.equal(array.length, 2);
assert.equal(array[0].get('b'), 'b');
});
QUnit.test("events are unbound on remove", function(assert) {
assert.expect(3);
var counter = 0;
var dj = new Backbone.Model();
var emcees = new Backbone.Collection([dj]);
emcees.on('change', function(){ counter++; });
dj.set({name : 'Kool'});
assert.equal(counter, 1);
emcees.reset([]);
assert.equal(dj.collection, undefined);
dj.set({name : 'Shadow'});
assert.equal(counter, 1);
});
QUnit.test("remove in multiple collections", function(assert) {
assert.expect(7);
var modelData = {
id : 5,
title : 'Othello'
};
var passed = false;
var e = new Backbone.Model(modelData);
var f = new Backbone.Model(modelData);
f.on('remove', function() {
passed = true;
});
var colE = new Backbone.Collection([e]);
var colF = new Backbone.Collection([f]);
assert.ok(e != f);
assert.ok(colE.length === 1);
assert.ok(colF.length === 1);
colE.remove(e);
assert.equal(passed, false);
assert.ok(colE.length === 0);
colF.remove(e);
assert.ok(colF.length === 0);
assert.equal(passed, true);
});
QUnit.test("remove same model in multiple collection", function(assert) {
assert.expect(16);
var counter = 0;
var e = new Backbone.Model({id: 5, title: 'Othello'});
e.on('remove', function(model, collection) {
counter++;
assert.equal(e, model);
if (counter > 1) {
assert.equal(collection, colE);
} else {
assert.equal(collection, colF);
}
});
var colE = new Backbone.Collection([e]);
colE.on('remove', function(model, collection) {
assert.equal(e, model);
assert.equal(colE, collection);
});
var colF = new Backbone.Collection([e]);
colF.on('remove', function(model, collection) {
assert.equal(e, model);
assert.equal(colF, collection);
});
assert.equal(colE, e.collection);
colF.remove(e);
assert.ok(colF.length === 0);
assert.ok(colE.length === 1);
assert.equal(counter, 1);
assert.equal(colE, e.collection);
colE.remove(e);
assert.equal(null, e.collection);
assert.ok(colE.length === 0);
assert.equal(counter, 2);
});
QUnit.test("model destroy removes from all collections", function(assert) {
assert.expect(3);
var e = new Backbone.Model({id: 5, title: 'Othello'});
e.sync = function(method, model, options) { options.success(); };
var colE = new Backbone.Collection([e]);
var colF = new Backbone.Collection([e]);
e.destroy();
assert.ok(colE.length === 0);
assert.ok(colF.length === 0);
assert.equal(undefined, e.collection);
});
QUnit.test("Collection: non-persisted model destroy removes from all collections", function(assert) {
assert.expect(3);
var e = new Backbone.Model({title: 'Othello'});
e.sync = function(method, model, options) { throw "should not be called"; };
var colE = new Backbone.Collection([e]);
var colF = new Backbone.Collection([e]);
e.destroy();
assert.ok(colE.length === 0);
assert.ok(colF.length === 0);
assert.equal(undefined, e.collection);
});
QUnit.test("fetch", function(assert) {
assert.expect(4);
var collection = new Backbone.Collection;
collection.url = '/test';
collection.fetch();
assert.equal(this.syncArgs.method, 'read');
assert.equal(this.syncArgs.model, collection);
assert.equal(this.syncArgs.options.parse, true);
collection.fetch({parse: false});
assert.equal(this.syncArgs.options.parse, false);
});
QUnit.test("fetch with an error response triggers an error event", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection();
collection.on('error', function () {
assert.ok(true);
});
collection.sync = function (method, model, options) { options.error(); };
collection.fetch();
});
QUnit.test("#3283 - fetch with an error response calls error with context", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection();
var obj = {};
var options = {
context: obj,
error: function() {
assert.equal(this, obj);
}
};
collection.sync = function (method, model, options) {
options.error.call(options.context);
};
collection.fetch(options);
});
QUnit.test("ensure fetch only parses once", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection;
var counter = 0;
collection.parse = function(models) {
counter++;
return models;
};
collection.url = '/test';
collection.fetch();
this.syncArgs.options.success([]);
assert.equal(counter, 1);
});
QUnit.test("create", function(assert) {
assert.expect(4);
var collection = new Backbone.Collection;
collection.url = '/test';
var model = collection.create({label: 'f'}, {wait: true});
assert.equal(this.syncArgs.method, 'create');
assert.equal(this.syncArgs.model, model);
assert.equal(model.get('label'), 'f');
assert.equal(model.collection, collection);
});
QUnit.test("create with validate:true enforces validation", function(assert) {
assert.expect(3);
var ValidatingModel = Backbone.Model.extend({
validate: function(attrs) {
return "fail";
}
});
var ValidatingCollection = Backbone.Collection.extend({
model: ValidatingModel
});
var col = new ValidatingCollection();
col.on('invalid', function (collection, error, options) {
assert.equal(error, "fail");
assert.equal(options.validationError, 'fail');
});
assert.equal(col.create({"foo":"bar"}, {validate:true}), false);
});
QUnit.test("create will pass extra options to success callback", function(assert) {
assert.expect(1);
var Model = Backbone.Model.extend({
sync: function (method, model, options) {
_.extend(options, {specialSync: true});
return Backbone.Model.prototype.sync.call(this, method, model, options);
}
});
var Collection = Backbone.Collection.extend({
model: Model,
url: '/test'
});
var collection = new Collection;
var success = function (model, response, options) {
assert.ok(options.specialSync, "Options were passed correctly to callback");
};
collection.create({}, {success: success});
this.ajaxSettings.success();
});
QUnit.test("create with wait:true should not call collection.parse", function(assert) {
assert.expect(0);
var Collection = Backbone.Collection.extend({
url: '/test',
parse: function () {
assert.ok(false);
}
});
var collection = new Collection;
collection.create({}, {wait: true});
this.ajaxSettings.success();
});
QUnit.test("a failing create returns model with errors", function(assert) {
var ValidatingModel = Backbone.Model.extend({
validate: function(attrs) {
return "fail";
}
});
var ValidatingCollection = Backbone.Collection.extend({
model: ValidatingModel
});
var col = new ValidatingCollection();
var m = col.create({"foo":"bar"});
assert.equal(m.validationError, 'fail');
assert.equal(col.length, 1);
});
QUnit.test("initialize", function(assert) {
assert.expect(1);
var Collection = Backbone.Collection.extend({
initialize: function() {
this.one = 1;
}
});
var coll = new Collection;
assert.equal(coll.one, 1);
});
QUnit.test("toJSON", function(assert) {
assert.expect(1);
assert.equal(JSON.stringify(col), '[{"id":3,"label":"a"},{"id":2,"label":"b"},{"id":1,"label":"c"},{"id":0,"label":"d"}]');
});
QUnit.test("where and findWhere", function(assert) {
assert.expect(8);
var model = new Backbone.Model({a: 1});
var coll = new Backbone.Collection([
model,
{a: 1},
{a: 1, b: 2},
{a: 2, b: 2},
{a: 3}
]);
assert.equal(coll.where({a: 1}).length, 3);
assert.equal(coll.where({a: 2}).length, 1);
assert.equal(coll.where({a: 3}).length, 1);
assert.equal(coll.where({b: 1}).length, 0);
assert.equal(coll.where({b: 2}).length, 2);
assert.equal(coll.where({a: 1, b: 2}).length, 1);
assert.equal(coll.findWhere({a: 1}), model);
assert.equal(coll.findWhere({a: 4}), void 0);
});
QUnit.test("Underscore methods", function(assert) {
assert.expect(21);
assert.equal(col.map(function(model){ return model.get('label'); }).join(' '), 'a b c d');
assert.equal(col.some(function(model){ return model.id === 100; }), false);
assert.equal(col.some(function(model){ return model.id === 0; }), true);
assert.equal(col.reduce(function(a, b) {return a.id > b.id ? a : b}).id, 3);
assert.equal(col.reduceRight(function(a, b) {return a.id > b.id ? a : b}).id, 3);
assert.equal(col.indexOf(b), 1);
assert.equal(col.size(), 4);
assert.equal(col.rest().length, 3);
assert.ok(!_.includes(col.rest(), a));
assert.ok(_.includes(col.rest(), d));
assert.ok(!col.isEmpty());
assert.ok(!_.includes(col.without(d), d));
var wrapped = col.chain();
assert.equal(wrapped.map('id').max().value(), 3);
assert.equal(wrapped.map('id').min().value(), 0);
assert.deepEqual(wrapped
.filter(function(o){ return o.id % 2 === 0; })
.map(function(o){ return o.id * 2; })
.value(),
[4, 0]);
assert.deepEqual(col.difference([c, d]), [a, b]);
assert.ok(col.includes(col.sample()));
var first = col.first();
assert.deepEqual(col.groupBy(function(model){ return model.id; })[first.id], [first]);
assert.deepEqual(col.countBy(function(model){ return model.id; }), {0: 1, 1: 1, 2: 1, 3: 1});
assert.deepEqual(col.sortBy(function(model){ return model.id; })[0], col.at(3));
assert.ok(col.indexBy('id')[first.id] === first);
});
QUnit.test("Underscore methods with object-style and property-style iteratee", function(assert) {
assert.expect(26);
var model = new Backbone.Model({a: 4, b: 1, e: 3});
var coll = new Backbone.Collection([
{a: 1, b: 1},
{a: 2, b: 1, c: 1},
{a: 3, b: 1},
model
]);
assert.equal(coll.find({a: 0}), undefined);
assert.deepEqual(coll.find({a: 4}), model);
assert.equal(coll.find('d'), undefined);
assert.deepEqual(coll.find('e'), model);
assert.equal(coll.filter({a: 0}), false);
assert.deepEqual(coll.filter({a: 4}), [model]);
assert.equal(coll.some({a: 0}), false);
assert.equal(coll.some({a: 1}), true);
assert.equal(coll.reject({a: 0}).length, 4);
assert.deepEqual(coll.reject({a: 4}), _.without(coll.models, model));
assert.equal(coll.every({a: 0}), false);
assert.equal(coll.every({b: 1}), true);
assert.deepEqual(coll.partition({a: 0})[0], []);
assert.deepEqual(coll.partition({a: 0})[1], coll.models);
assert.deepEqual(coll.partition({a: 4})[0], [model]);
assert.deepEqual(coll.partition({a: 4})[1], _.without(coll.models, model));
assert.deepEqual(coll.map({a: 2}), [false, true, false, false]);
assert.deepEqual(coll.map('a'), [1, 2, 3, 4]);
assert.deepEqual(coll.sortBy('a')[3], model);
assert.deepEqual(coll.sortBy('e')[0], model);
assert.deepEqual(coll.countBy({a: 4}), {'false': 3, 'true': 1});
assert.deepEqual(coll.countBy('d'), {'undefined': 4});
assert.equal(coll.findIndex({b: 1}), 0);
assert.equal(coll.findIndex({b: 9}), -1);
assert.equal(coll.findLastIndex({b: 1}), 3);
assert.equal(coll.findLastIndex({b: 9}), -1);
});
QUnit.test("reset", function(assert) {
assert.expect(16);
var resetCount = 0;
var models = col.models;
col.on('reset', function() { resetCount += 1; });
col.reset([]);
assert.equal(resetCount, 1);
assert.equal(col.length, 0);
assert.equal(col.last(), null);
col.reset(models);
assert.equal(resetCount, 2);
assert.equal(col.length, 4);
assert.equal(col.last(), d);
col.reset(_.map(models, function(m){ return m.attributes; }));
assert.equal(resetCount, 3);
assert.equal(col.length, 4);
assert.ok(col.last() !== d);
assert.ok(_.isEqual(col.last().attributes, d.attributes));
col.reset();
assert.equal(col.length, 0);
assert.equal(resetCount, 4);
var f = new Backbone.Model({id: 20, label : 'f'});
col.reset([undefined, f]);
assert.equal(col.length, 2);
assert.equal(resetCount, 5);
col.reset(new Array(4));
assert.equal(col.length, 4);
assert.equal(resetCount, 6);
});
QUnit.test ("reset with different values", function(assert) {
var col = new Backbone.Collection({id: 1});
col.reset({id: 1, a: 1});
assert.equal(col.get(1).get('a'), 1);
});
QUnit.test("same references in reset", function(assert) {
var model = new Backbone.Model({id: 1});
var collection = new Backbone.Collection({id: 1});
collection.reset(model);
assert.equal(collection.get(1), model);
});
QUnit.test("reset passes caller options", function(assert) {
assert.expect(3);
var Model = Backbone.Model.extend({
initialize: function(attrs, options) {
this.model_parameter = options.model_parameter;
}
});
var col = new (Backbone.Collection.extend({ model: Model }))();
col.reset([{ astring: "green", anumber: 1 }, { astring: "blue", anumber: 2 }], { model_parameter: 'model parameter' });
assert.equal(col.length, 2);
col.each(function(model) {
assert.equal(model.model_parameter, 'model parameter');
});
});
QUnit.test("reset does not alter options by reference", function(assert) {
assert.expect(2);
var col = new Backbone.Collection([{id:1}]);
var origOpts = {};
col.on("reset", function(col, opts){
assert.equal(origOpts.previousModels, undefined);
assert.equal(opts.previousModels[0].id, 1);
});
col.reset([], origOpts);
});
QUnit.test("trigger custom events on models", function(assert) {
assert.expect(1);
var fired = null;
a.on("custom", function() { fired = true; });
a.trigger("custom");
assert.equal(fired, true);
});
QUnit.test("add does not alter arguments", function(assert) {
assert.expect(2);
var attrs = {};
var models = [attrs];
new Backbone.Collection().add(models);
assert.equal(models.length, 1);
assert.ok(attrs === models[0]);
});
QUnit.test("#714: access `model.collection` in a brand new model.", function(assert) {
assert.expect(2);
var collection = new Backbone.Collection;
collection.url = '/test';
var Model = Backbone.Model.extend({
set: function(attrs) {
assert.equal(attrs.prop, 'value');
assert.equal(this.collection, collection);
return this;
}
});
collection.model = Model;
collection.create({prop: 'value'});
});
QUnit.test("#574, remove its own reference to the .models array.", function(assert) {
assert.expect(2);
var col = new Backbone.Collection([
{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}
]);
assert.equal(col.length, 6);
col.remove(col.models);
assert.equal(col.length, 0);
});
QUnit.test("#861, adding models to a collection which do not pass validation, with validate:true", function(assert) {
assert.expect(2);
var Model = Backbone.Model.extend({
validate: function(attrs) {
if (attrs.id == 3) return "id can't be 3";
}
});
var Collection = Backbone.Collection.extend({
model: Model
});
var collection = new Collection;
collection.on("invalid", function() { assert.ok(true); });
collection.add([{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}], {validate:true});
assert.deepEqual(collection.pluck("id"), [1, 2, 4, 5, 6]);
});
QUnit.test("Invalid models are discarded with validate:true.", function(assert) {
assert.expect(5);
var collection = new Backbone.Collection;
collection.on('test', function() { assert.ok(true); });
collection.model = Backbone.Model.extend({
validate: function(attrs){ if (!attrs.valid) return 'invalid'; }
});
var model = new collection.model({id: 1, valid: true});
collection.add([model, {id: 2}], {validate:true});
model.trigger('test');
assert.ok(collection.get(model.cid));
assert.ok(collection.get(1));
assert.ok(!collection.get(2));
assert.equal(collection.length, 1);
});
QUnit.test("multiple copies of the same model", function(assert) {
assert.expect(3);
var col = new Backbone.Collection();
var model = new Backbone.Model();
col.add([model, model]);
assert.equal(col.length, 1);
col.add([{id: 1}, {id: 1}]);
assert.equal(col.length, 2);
assert.equal(col.last().id, 1);
});
QUnit.test("#964 - collection.get return inconsistent", function(assert) {
assert.expect(2);
var c = new Backbone.Collection();
assert.ok(c.get(null) === undefined);
assert.ok(c.get() === undefined);
});
QUnit.test("#1112 - passing options.model sets collection.model", function(assert) {
assert.expect(2);
var Model = Backbone.Model.extend({});
var c = new Backbone.Collection([{id: 1}], {model: Model});
assert.ok(c.model === Model);
assert.ok(c.at(0) instanceof Model);
});
QUnit.test("null and undefined are invalid ids.", function(assert) {
assert.expect(2);
var model = new Backbone.Model({id: 1});
var collection = new Backbone.Collection([model]);
model.set({id: null});
assert.ok(!collection.get('null'));
model.set({id: 1});
model.set({id: undefined});
assert.ok(!collection.get('undefined'));
});
QUnit.test("falsy comparator", function(assert) {
assert.expect(4);
var Col = Backbone.Collection.extend({
comparator: function(model){ return model.id; }
});
var col = new Col();
var colFalse = new Col(null, {comparator: false});
var colNull = new Col(null, {comparator: null});
var colUndefined = new Col(null, {comparator: undefined});
assert.ok(col.comparator);
assert.ok(!colFalse.comparator);
assert.ok(!colNull.comparator);
assert.ok(colUndefined.comparator);
});
QUnit.test("#1355 - `options` is passed to success callbacks", function(assert) {
assert.expect(2);
var m = new Backbone.Model({x:1});
var col = new Backbone.Collection();
var opts = {
opts: true,
success: function(collection, resp, options) {
assert.ok(options.opts);
}
};
col.sync = m.sync = function( method, collection, options ){
options.success({});
};
col.fetch(opts);
col.create(m, opts);
});
QUnit.test("#1412 - Trigger 'request' and 'sync' events.", function(assert) {
assert.expect(4);
var collection = new Backbone.Collection;
collection.url = '/test';
Backbone.ajax = function(settings){ settings.success(); };
collection.on('request', function(obj, xhr, options) {
assert.ok(obj === collection, "collection has correct 'request' event after fetching");
});
collection.on('sync', function(obj, response, options) {
assert.ok(obj === collection, "collection has correct 'sync' event after fetching");
});
collection.fetch();
collection.off();
collection.on('request', function(obj, xhr, options) {
assert.ok(obj === collection.get(1), "collection has correct 'request' event after one of its models save");
});
collection.on('sync', function(obj, response, options) {
assert.ok(obj === collection.get(1), "collection has correct 'sync' event after one of its models save");
});
collection.create({id: 1});
collection.off();
});
QUnit.test("#3283 - fetch, create calls success with context", function(assert) {
assert.expect(2);
var collection = new Backbone.Collection;
collection.url = '/test';
Backbone.ajax = function(settings) {
settings.success.call(settings.context);
};
var obj = {};
var options = {
context: obj,
success: function() {
assert.equal(this, obj);
}
};
collection.fetch(options);
collection.create({id: 1}, options);
});
QUnit.test("#1447 - create with wait adds model.", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection;
var model = new Backbone.Model;
model.sync = function(method, model, options){ options.success(); };
collection.on('add', function(){ assert.ok(true); });
collection.create(model, {wait: true});
});
QUnit.test("#1448 - add sorts collection after merge.", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([
{id: 1, x: 1},
{id: 2, x: 2}
]);
collection.comparator = function(model){ return model.get('x'); };
collection.add({id: 1, x: 3}, {merge: true});
assert.deepEqual(collection.pluck('id'), [2, 1]);
});
QUnit.test("#1655 - groupBy can be used with a string argument.", function(assert) {
assert.expect(3);
var collection = new Backbone.Collection([{x: 1}, {x: 2}]);
var grouped = collection.groupBy('x');
assert.strictEqual(_.keys(grouped).length, 2);
assert.strictEqual(grouped[1][0].get('x'), 1);
assert.strictEqual(grouped[2][0].get('x'), 2);
});
QUnit.test("#1655 - sortBy can be used with a string argument.", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{x: 3}, {x: 1}, {x: 2}]);
var values = _.map(collection.sortBy('x'), function(model) {
return model.get('x');
});
assert.deepEqual(values, [1, 2, 3]);
});
QUnit.test("#1604 - Removal during iteration.", function(assert) {
assert.expect(0);
var collection = new Backbone.Collection([{}, {}]);
collection.on('add', function() {
collection.at(0).destroy();
});
collection.add({}, {at: 0});
});
QUnit.test("#1638 - `sort` during `add` triggers correctly.", function(assert) {
var collection = new Backbone.Collection;
collection.comparator = function(model) { return model.get('x'); };
var added = [];
collection.on('add', function(model) {
model.set({x: 3});
collection.sort();
added.push(model.id);
});
collection.add([{id: 1, x: 1}, {id: 2, x: 2}]);
assert.deepEqual(added, [1, 2]);
});
QUnit.test("fetch parses models by default", function(assert) {
assert.expect(1);
var model = {};
var Collection = Backbone.Collection.extend({
url: 'test',
model: Backbone.Model.extend({
parse: function(resp) {
assert.strictEqual(resp, model);
}
})
});
new Collection().fetch();
this.ajaxSettings.success([model]);
});
QUnit.test("`sort` shouldn't always fire on `add`", function(assert) {
assert.expect(1);
var c = new Backbone.Collection([{id: 1}, {id: 2}, {id: 3}], {
comparator: 'id'
});
c.sort = function(){ assert.ok(true); };
c.add([]);
c.add({id: 1});
c.add([{id: 2}, {id: 3}]);
c.add({id: 4});
});
QUnit.test("#1407 parse option on constructor parses collection and models", function(assert) {
assert.expect(2);
var model = {
namespace : [{id: 1}, {id:2}]
};
var Collection = Backbone.Collection.extend({
model: Backbone.Model.extend({
parse: function(model) {
model.name = 'test';
return model;
}
}),
parse: function(model) {
return model.namespace;
}
});
var c = new Collection(model, {parse:true});
assert.equal(c.length, 2);
assert.equal(c.at(0).get('name'), 'test');
});
QUnit.test("#1407 parse option on reset parses collection and models", function(assert) {
assert.expect(2);
var model = {
namespace : [{id: 1}, {id:2}]
};
var Collection = Backbone.Collection.extend({
model: Backbone.Model.extend({
parse: function(model) {
model.name = 'test';
return model;
}
}),
parse: function(model) {
return model.namespace;
}
});
var c = new Collection();
c.reset(model, {parse:true});
assert.equal(c.length, 2);
assert.equal(c.at(0).get('name'), 'test');
});
QUnit.test("Reset includes previous models in triggered event.", function(assert) {
assert.expect(1);
var model = new Backbone.Model();
var collection = new Backbone.Collection([model])
.on('reset', function(collection, options) {
deepEqual(options.previousModels, [model]);
});
collection.reset([]);
});
QUnit.test("set", function(assert) {
var m1 = new Backbone.Model();
var m2 = new Backbone.Model({id: 2});
var m3 = new Backbone.Model();
var c = new Backbone.Collection([m1, m2]);
// Test add/change/remove events
c.on('add', function(model) {
assert.strictEqual(model, m3);
});
c.on('change', function(model) {
assert.strictEqual(model, m2);
});
c.on('remove', function(model) {
assert.strictEqual(model, m1);
});
// remove: false doesn't remove any models
c.set([], {remove: false});
assert.strictEqual(c.length, 2);
// add: false doesn't add any models
c.set([m1, m2, m3], {add: false});
assert.strictEqual(c.length, 2);
// merge: false doesn't change any models
c.set([m1, {id: 2, a: 1}], {merge: false});
assert.strictEqual(m2.get('a'), void 0);
// add: false, remove: false only merges existing models
c.set([m1, {id: 2, a: 0}, m3, {id: 4}], {add: false, remove: false});
assert.strictEqual(c.length, 2);
assert.strictEqual(m2.get('a'), 0);
// default options add/remove/merge as appropriate
c.set([{id: 2, a: 1}, m3]);
assert.strictEqual(c.length, 2);
assert.strictEqual(m2.get('a'), 1);
// Test removing models not passing an argument
c.off('remove').on('remove', function(model) {
assert.ok(model === m2 || model === m3);
});
c.set([]);
assert.strictEqual(c.length, 0);
// Test null models on set doesn't clear collection
c.off();
c.set([{id: 1}]);
c.set();
assert.strictEqual(c.length, 1);
});
QUnit.test("set with only cids", function(assert) {
assert.expect(3);
var m1 = new Backbone.Model;
var m2 = new Backbone.Model;
var c = new Backbone.Collection;
c.set([m1, m2]);
assert.equal(c.length, 2);
c.set([m1]);
assert.equal(c.length, 1);
c.set([m1, m1, m1, m2, m2], {remove: false});
assert.equal(c.length, 2);
});
QUnit.test("set with only idAttribute", function(assert) {
assert.expect(3);
var m1 = { _id: 1 };
var m2 = { _id: 2 };
var col = Backbone.Collection.extend({
model: Backbone.Model.extend({
idAttribute: '_id'
})
});
var c = new col;
c.set([m1, m2]);
assert.equal(c.length, 2);
c.set([m1]);
assert.equal(c.length, 1);
c.set([m1, m1, m1, m2, m2], {remove: false});
assert.equal(c.length, 2);
});
QUnit.test("set + merge with default values defined", function(assert) {
var Model = Backbone.Model.extend({
defaults: {
key: 'value'
}
});
var m = new Model({id: 1});
var col = new Backbone.Collection([m], {model: Model});
assert.equal(col.first().get('key'), 'value');
col.set({id: 1, key: 'other'});
assert.equal(col.first().get('key'), 'other');
col.set({id: 1, other: 'value'});
assert.equal(col.first().get('key'), 'other');
assert.equal(col.length, 1);
});
QUnit.test('merge without mutation', function(assert) {
var Model = Backbone.Model.extend({
initialize: function (attrs, options) {
if (attrs.child) {
this.set('child', new Model(attrs.child, options), options);
}
}
});
var Collection = Backbone.Collection.extend({model: Model});
var data = [{id: 1, child: {id: 2}}];
var collection = new Collection(data);
assert.equal(collection.first().id, 1);
collection.set(data);
assert.equal(collection.first().id, 1);
collection.set([{id: 2, child: {id: 2}}].concat(data));
assert.deepEqual(collection.pluck('id'), [2, 1]);
});
QUnit.test("`set` and model level `parse`", function(assert) {
var Model = Backbone.Model.extend({});
var Collection = Backbone.Collection.extend({
model: Model,
parse: function (res) { return _.map(res.models, 'model'); }
});
var model = new Model({id: 1});
var collection = new Collection(model);
collection.set({models: [
{model: {id: 1}},
{model: {id: 2}}
]}, {parse: true});
assert.equal(collection.first(), model);
});
QUnit.test("`set` data is only parsed once", function(assert) {
var collection = new Backbone.Collection();
collection.model = Backbone.Model.extend({
parse: function (data) {
assert.equal(data.parsed, void 0);
data.parsed = true;
return data;
}
});
collection.set({}, {parse: true});
});
QUnit.test('`set` matches input order in the absence of a comparator', function(assert) {
var one = new Backbone.Model({id: 1});
var two = new Backbone.Model({id: 2});
var three = new Backbone.Model({id: 3});
var collection = new Backbone.Collection([one, two, three]);
collection.set([{id: 3}, {id: 2}, {id: 1}]);
assert.deepEqual(collection.models, [three, two, one]);
collection.set([{id: 1}, {id: 2}]);
assert.deepEqual(collection.models, [one, two]);
collection.set([two, three, one]);
assert.deepEqual(collection.models, [two, three, one]);
collection.set([{id: 1}, {id: 2}], {remove: false});
assert.deepEqual(collection.models, [two, three, one]);
collection.set([{id: 1}, {id: 2}, {id: 3}], {merge: false});
assert.deepEqual(collection.models, [one, two, three]);
collection.set([three, two, one, {id: 4}], {add: false});
assert.deepEqual(collection.models, [one, two, three]);
});
QUnit.test("#1894 - Push should not trigger a sort", function(assert) {
assert.expect(0);
var Collection = Backbone.Collection.extend({
comparator: 'id',
sort: function() { assert.ok(false); }
});
new Collection().push({id: 1});
});
QUnit.test("#2428 - push duplicate models, return the correct one", function(assert) {
assert.expect(1);
var col = new Backbone.Collection;
var model1 = col.push({id: 101});
var model2 = col.push({id: 101});
assert.ok(model2.cid == model1.cid);
});
QUnit.test("`set` with non-normal id", function(assert) {
var Collection = Backbone.Collection.extend({
model: Backbone.Model.extend({idAttribute: '_id'})
});
var collection = new Collection({_id: 1});
collection.set([{_id: 1, a: 1}], {add: false});
assert.equal(collection.first().get('a'), 1);
});
QUnit.test("#1894 - `sort` can optionally be turned off", function(assert) {
assert.expect(0);
var Collection = Backbone.Collection.extend({
comparator: 'id',
sort: function() { assert.ok(false); }
});
new Collection().add({id: 1}, {sort: false});
});
QUnit.test("#1915 - `parse` data in the right order in `set`", function(assert) {
var collection = new (Backbone.Collection.extend({
parse: function (data) {
assert.strictEqual(data.status, 'ok');
return data.data;
}
}));
var res = {status: 'ok', data:[{id: 1}]};
collection.set(res, {parse: true});
});
QUnit.test("#1939 - `parse` is passed `options`", function(assert) {
var done = assert.async();
assert.expect(1);
var collection = new (Backbone.Collection.extend({
url: '/',
parse: function (data, options) {
assert.strictEqual(options.xhr.someHeader, 'headerValue');
return data;
}
}));
var ajax = Backbone.ajax;
Backbone.ajax = function (params) {
_.defer(params.success, []);
return {someHeader: 'headerValue'};
};
collection.fetch({
success: function () { done(); }
});
Backbone.ajax = ajax;
});
QUnit.test("fetch will pass extra options to success callback", function(assert) {
assert.expect(1);
var SpecialSyncCollection = Backbone.Collection.extend({
url: '/test',
sync: function (method, collection, options) {
_.extend(options, { specialSync: true });
return Backbone.Collection.prototype.sync.call(this, method, collection, options);
}
});
var collection = new SpecialSyncCollection();
var onSuccess = function (collection, resp, options) {
assert.ok(options.specialSync, "Options were passed correctly to callback");
};
collection.fetch({ success: onSuccess });
this.ajaxSettings.success();
});
QUnit.test("`add` only `sort`s when necessary", function(assert) {
assert.expect(2);
var collection = new (Backbone.Collection.extend({
comparator: 'a'
}))([{id: 1}, {id: 2}, {id: 3}]);
collection.on('sort', function () { ok(true); });
collection.add({id: 4}); // do sort, new model
collection.add({id: 1, a: 1}, {merge: true}); // do sort, comparator change
collection.add({id: 1, b: 1}, {merge: true}); // don't sort, no comparator change
collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no comparator change
collection.add(collection.models); // don't sort, nothing new
collection.add(collection.models, {merge: true}); // don't sort
});
QUnit.test("`add` only `sort`s when necessary with comparator function", function(assert) {
assert.expect(3);
var collection = new (Backbone.Collection.extend({
comparator: function(a, b) {
return a.get('a') > b.get('a') ? 1 : (a.get('a') < b.get('a') ? -1 : 0);
}
}))([{id: 1}, {id: 2}, {id: 3}]);
collection.on('sort', function () { ok(true); });
collection.add({id: 4}); // do sort, new model
collection.add({id: 1, a: 1}, {merge: true}); // do sort, model change
collection.add({id: 1, b: 1}, {merge: true}); // do sort, model change
collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no model change
collection.add(collection.models); // don't sort, nothing new
collection.add(collection.models, {merge: true}); // don't sort
});
QUnit.test("Attach options to collection.", function(assert) {
assert.expect(2);
var Model = Backbone.Model;
var comparator = function(){};
var collection = new Backbone.Collection([], {
model: Model,
comparator: comparator
});
assert.ok(collection.model === Model);
assert.ok(collection.comparator === comparator);
});
QUnit.test("Pass falsey for `models` for empty Col with `options`", function(assert) {
assert.expect(9);
var opts = {a: 1, b: 2};
_.forEach([undefined, null, false], function(falsey) {
var Collection = Backbone.Collection.extend({
initialize: function(models, options) {
assert.strictEqual(models, falsey);
assert.strictEqual(options, opts);
}
});
var col = new Collection(falsey, opts);
assert.strictEqual(col.length, 0);
});
});
QUnit.test("`add` overrides `set` flags", function(assert) {
var collection = new Backbone.Collection();
collection.once('add', function (model, collection, options) {
collection.add({id: 2}, options);
});
collection.set({id: 1});
assert.equal(collection.length, 2);
});
QUnit.test("#2606 - Collection#create, success arguments", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection;
collection.url = 'test';
collection.create({}, {
success: function(model, resp, options) {
assert.strictEqual(resp, 'response');
}
});
this.ajaxSettings.success('response');
});
QUnit.test("#2612 - nested `parse` works with `Collection#set`", function(assert) {
var Job = Backbone.Model.extend({
constructor: function() {
this.items = new Items();
Backbone.Model.apply(this, arguments);
},
parse: function(attrs) {
this.items.set(attrs.items, {parse: true});
return _.omit(attrs, 'items');
}
});
var Item = Backbone.Model.extend({
constructor: function() {
this.subItems = new Backbone.Collection();
Backbone.Model.apply(this, arguments);
},
parse: function(attrs) {
this.subItems.set(attrs.subItems, {parse: true});
return _.omit(attrs, 'subItems');
}
});
var Items = Backbone.Collection.extend({
model: Item
});
var data = {
name: 'JobName',
id: 1,
items: [{
id: 1,
name: 'Sub1',
subItems: [
{id: 1, subName: 'One'},
{id: 2, subName: 'Two'}
]
}, {
id: 2,
name: 'Sub2',
subItems: [
{id: 3, subName: 'Three'},
{id: 4, subName: 'Four'}
]
}]
};
var newData = {
name: 'NewJobName',
id: 1,
items: [{
id: 1,
name: 'NewSub1',
subItems: [
{id: 1,subName: 'NewOne'},
{id: 2,subName: 'NewTwo'}
]
}, {
id: 2,
name: 'NewSub2',
subItems: [
{id: 3,subName: 'NewThree'},
{id: 4,subName: 'NewFour'}
]
}]
};
var job = new Job(data, {parse: true});
assert.equal(job.get('name'), 'JobName');
assert.equal(job.items.at(0).get('name'), 'Sub1');
assert.equal(job.items.length, 2);
assert.equal(job.items.get(1).subItems.get(1).get('subName'), 'One');
assert.equal(job.items.get(2).subItems.get(3).get('subName'), 'Three');
job.set(job.parse(newData, {parse: true}));
assert.equal(job.get('name'), 'NewJobName');
assert.equal(job.items.at(0).get('name'), 'NewSub1');
assert.equal(job.items.length, 2);
assert.equal(job.items.get(1).subItems.get(1).get('subName'), 'NewOne');
assert.equal(job.items.get(2).subItems.get(3).get('subName'), 'NewThree');
});
QUnit.test('_addReference binds all collection events & adds to the lookup hashes', function(assert) {
assert.expect(9);
var calls = {add: 0, remove: 0};
var Collection = Backbone.Collection.extend({
_addReference: function(model) {
Backbone.Collection.prototype._addReference.apply(this, arguments);
calls.add++;
assert.equal(model, this._byId[model.id]);
assert.equal(model, this._byId[model.cid]);
assert.equal(model._events.all.length, 1);
},
_removeReference: function(model) {
Backbone.Collection.prototype._removeReference.apply(this, arguments);
calls.remove++;
assert.equal(this._byId[model.id], void 0);
assert.equal(this._byId[model.cid], void 0);
assert.equal(model.collection, void 0);
assert.equal(model._events, void 0);
}
});
var collection = new Collection();
var model = collection.add({id: 1});
collection.remove(model);
assert.equal(calls.add, 1);
assert.equal(calls.remove, 1);
});
QUnit.test('Do not allow duplicate models to be `add`ed or `set`', function(assert) {
var c = new Backbone.Collection();
c.add([{id: 1}, {id: 1}]);
assert.equal(c.length, 1);
assert.equal(c.models.length, 1);
c.set([{id: 1}, {id: 1}]);
assert.equal(c.length, 1);
assert.equal(c.models.length, 1);
});
QUnit.test('#3020: #set with {add: false} should not throw.', function(assert) {
assert.expect(2);
var collection = new Backbone.Collection;
collection.set([{id: 1}], {add: false});
assert.strictEqual(collection.length, 0);
assert.strictEqual(collection.models.length, 0);
});
QUnit.test("create with wait, model instance, #3028", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection();
var model = new Backbone.Model({id: 1});
model.sync = function(){
assert.equal(this.collection, collection);
};
collection.create(model, {wait: true});
});
QUnit.test("modelId", function(assert) {
var Stooge = Backbone.Model.extend();
var StoogeCollection = Backbone.Collection.extend({model: Stooge});
// Default to using `Collection::model::idAttribute`.
assert.equal(StoogeCollection.prototype.modelId({id: 1}), 1);
Stooge.prototype.idAttribute = '_id';
assert.equal(StoogeCollection.prototype.modelId({_id: 1}), 1);
});
QUnit.test('Polymorphic models work with "simple" constructors', function(assert) {
var A = Backbone.Model.extend();
var B = Backbone.Model.extend();
var C = Backbone.Collection.extend({
model: function (attrs) {
return attrs.type === 'a' ? new A(attrs) : new B(attrs);
}
});
var collection = new C([{id: 1, type: 'a'}, {id: 2, type: 'b'}]);
assert.equal(collection.length, 2);
assert.ok(collection.at(0) instanceof A);
assert.equal(collection.at(0).id, 1);
assert.ok(collection.at(1) instanceof B);
assert.equal(collection.at(1).id, 2);
});
QUnit.test('Polymorphic models work with "advanced" constructors', function(assert) {
var A = Backbone.Model.extend({idAttribute: '_id'});
var B = Backbone.Model.extend({idAttribute: '_id'});
var C = Backbone.Collection.extend({
model: Backbone.Model.extend({
constructor: function (attrs) {
return attrs.type === 'a' ? new A(attrs) : new B(attrs);
},
idAttribute: '_id'
})
});
var collection = new C([{_id: 1, type: 'a'}, {_id: 2, type: 'b'}]);
assert.equal(collection.length, 2);
assert.ok(collection.at(0) instanceof A);
assert.equal(collection.at(0), collection.get(1));
assert.ok(collection.at(1) instanceof B);
assert.equal(collection.at(1), collection.get(2));
C = Backbone.Collection.extend({
model: function (attrs) {
return attrs.type === 'a' ? new A(attrs) : new B(attrs);
},
modelId: function (attrs) {
return attrs.type + '-' + attrs.id;
}
});
collection = new C([{id: 1, type: 'a'}, {id: 1, type: 'b'}]);
assert.equal(collection.length, 2);
assert.ok(collection.at(0) instanceof A);
assert.equal(collection.at(0), collection.get('a-1'));
assert.ok(collection.at(1) instanceof B);
assert.equal(collection.at(1), collection.get('b-1'));
});
QUnit.test("#3039: adding at index fires with correct at", function(assert) {
assert.expect(3);
var col = new Backbone.Collection([{at: 0}, {at: 4}]);
col.on('add', function(model, col, options) {
assert.equal(model.get('at'), options.index);
});
col.add([{at: 1}, {at: 2}, {at: 3}], {at: 1});
});
QUnit.test("#3039: index is not sent when at is not specified", function(assert) {
assert.expect(2);
var col = new Backbone.Collection([{at: 0}]);
col.on('add', function(model, col, options) {
assert.equal(undefined, options.index);
});
col.add([{at: 1}, {at: 2}]);
});
QUnit.test('#3199 - Order changing should trigger a sort', function(assert) {
assert.expect(1);
var one = new Backbone.Model({id: 1});
var two = new Backbone.Model({id: 2});
var three = new Backbone.Model({id: 3});
var collection = new Backbone.Collection([one, two, three]);
collection.on('sort', function() {
assert.ok(true);
});
collection.set([{id: 3}, {id: 2}, {id: 1}]);
});
QUnit.test('#3199 - Adding a model should trigger a sort', function(assert) {
assert.expect(1);
var one = new Backbone.Model({id: 1});
var two = new Backbone.Model({id: 2});
var three = new Backbone.Model({id: 3});
var collection = new Backbone.Collection([one, two, three]);
collection.on('sort', function() {
assert.ok(true);
});
collection.set([{id: 1}, {id: 2}, {id: 3}, {id: 0}]);
});
QUnit.test('#3199 - Order not changing should not trigger a sort', function(assert) {
assert.expect(0);
var one = new Backbone.Model({id: 1});
var two = new Backbone.Model({id: 2});
var three = new Backbone.Model({id: 3});
var collection = new Backbone.Collection([one, two, three]);
collection.on('sort', function() {
assert.ok(false);
});
collection.set([{id: 1}, {id: 2}, {id: 3}]);
});
QUnit.test("add supports negative indexes", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{id: 1}]);
collection.add([{id: 2}, {id: 3}], {at: -1});
collection.add([{id: 2.5}], {at: -2});
collection.add([{id: 0.5}], {at: -6});
assert.equal(collection.pluck('id').join(','), "0.5,1,2,2.5,3");
});
QUnit.test("#set accepts options.at as a string", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
collection.add([{id: 3}], {at: '1'});
assert.deepEqual(collection.pluck('id'), [1, 3, 2]);
});
QUnit.test("adding multiple models triggers `update` event once", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection;
collection.on('update', function() { assert.ok(true); });
collection.add([{id: 1}, {id: 2}, {id: 3}]);
});
QUnit.test("removing models triggers `update` event once", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{id: 1}, {id: 2}, {id: 3}]);
collection.on('update', function() { assert.ok(true); });
collection.remove([{id: 1}, {id: 2}]);
});
QUnit.test("remove does not trigger `set` when nothing removed", function(assert) {
assert.expect(0);
var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
collection.on('update', function() { assert.ok(false); });
collection.remove([{id: 3}]);
});
QUnit.test("set triggers `set` event once", function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
collection.on('update', function() { assert.ok(true); });
collection.set([{id: 1}, {id: 3}]);
});
QUnit.test("set does not trigger `update` event when nothing added nor removed", function(assert) {
assert.expect(0);
var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
collection.on('update', function() { assert.ok(false); });
collection.set([{id: 1}, {id: 2}]);
});
QUnit.test("#3610 - invoke collects arguments", function(assert) {
assert.expect(3);
var Model = Backbone.Model.extend({
method: function(a, b, c) {
assert.equal(a, 1);
assert.equal(b, 2);
assert.equal(c, 3);
}
});
var Collection = Backbone.Collection.extend({
model: Model
});
var collection = new Collection([{id: 1}]);
collection.invoke('method', 1, 2, 3);
});
QUnit.test('#3662 - triggering change without model will not error', function(assert) {
assert.expect(1);
var collection = new Backbone.Collection([{id: 1}]);
var model = collection.first();
collection.on('change', function(model) {
assert.equal(model, undefined);
});
model.trigger('change');
});
QUnit.test('#3871 - falsy parse result creates empty collection', function(assert) {
var collection = new (Backbone.Collection.extend({
parse: function (data, options) {}
}));
collection.set('', { parse: true });
assert.equal(collection.length, 0);
});
})();
